Criando um thin client baseado em PCs de placa única baratos

Às vezes, você precisa criar um thin client astuto - com autorização incomum e custos baixos.

A maneira mais fácil de usar isso é o Linux.

Para PCs de placa única baseados em ARM, a distribuição do Armbian , que é baseada na filial Debian, é generalizada.

Para experimentos, eu tinha uma placa OrangePi One
imagem
e um cartão MicroSD em 2G - eu decidi fazer deste um cliente RDP fino com uma janela de bloqueio e sem software desnecessário.

A distribuição da Armbian para este fórum está aqui .

Baixe o último com uma nota:

Cenários de uso do servidor ou da área de trabalho leve.

Ele não terá uma área de trabalho desnecessária no thin client.

Escrevemos a imagem no MicroSD (usei sourceforge.net/projects/win32diskimager ).

Após a gravação: insira o MicroSD, conecte todas as interfaces (LAN, Vídeo, teclado, mouse), aplique energia e aguarde o carregamento.

Quando o sistema inicializar, você será solicitado a inserir seu login e senha. Você também pode acessar o SSH olhando o endereço DHCP fornecido (aproveitei a oportunidade para não dirigir as configurações do teclado e iniciei o PuTTY).

Login: raiz
Senha: 1234

Após o login, o sistema solicitará que você altere a senha: insira o 1234 atual e duas vezes uma nova senha.

Também é proposto criar um usuário - vamos chamá-lo de usuário .

Depois disso, prosseguimos para configurar o sistema para a tarefa.

Instale os pacotes ausentes:

apt update apt install xorg lightdm xcursor-themes numix-gtk-theme numix-icon-theme apt install python-gtk2 freerdp 

O início do login gráfico do systemd será ativado assim:

 systemctl set-default graphical.target 

Crie os arquivos:
(torná-los é a maneira mais fácil de usar o editor vi - depois de começar com o parâmetro, você precisa pressionar i para colar - basta colar o texto na janela do console e, quando terminar, pressione Esc e digite: w para escrever e: q para sair)

Para obter suas configurações através de um servidor DHCP

 vi /etc/dhcp/dhclient-exit-hooks.d/paramscript 

 setup_add() { echo $new_host_name > /etc/hostname hostname $new_host_name if [ -z "$new_nds_servers" ] ; then echo $new_routers > /tmp/rdp_server echo "testuser" > /tmp/rdp_user echo "1234test#" > /tmp/rdp_passwd else echo $new_nds_servers > /tmp/rdp_server echo $new_nds_tree_name > /tmp/rdp_user echo $new_nds_context > /tmp/rdp_passwd fi } case $reason in BOUND|RENEW|REBIND|REBOOT) setup_add ;; EXPIRE|FAIL|RELEASE|STOP) return ;; esac 

esse script recebe o nome do host DHCP e nds_servers, nds_tree_name, nds_context e salva seus valores nos arquivos em uma pasta temporária. Por padrão, o endereço IP do roteador será usado.

Para configurar o GTK e atribuí-lo a eles, crie

 vi /home/user/.gtkrc-2.0 

 gtk-icon-theme-name = "Numix" gtk-theme-name = "Numix" gtk-cursor-theme-name = "whiteglass" 

Para configurar o gerenciador gráfico LightDM:

 vi /etc/lightdm/lightdm.conf 

 [LightDM] greeter-user=user [Seat:*] greeter-session=my-greeter 

Depois de experimentar, decidi usar o greeter (o programa de login), então não precisarei configurar o login automático e o programa iniciará com o usuário certo.

Agora crie o atalho do programa (e sua pasta):

 mkdir /usr/share/xgreeters/ vi /usr/share/xgreeters/my-greeter.desktop 

 [Desktop Entry] Name=PyGTK+ Greeter Comment=This runs the PyGTK+ greeter, it should only be run from LightDM Exec=python /home/user/greeter.py Type=Application X-Ubuntu-Gettext-Domain=lightdm 

E o próprio código de login:

 vi /home/user/greeter.py 

O código sugere a inserção de uma senha de quatro dígitos 0811 (dia do mês com zeros insignificantes sem espaços)
Após uma entrada bem-sucedida, o xfreerdp é iniciado com os parâmetros recebidos.

Código
 #!/usr/bin/env python # -*- coding: UTF-8 -*- from datetime import datetime from gobject import timeout_add import os,sys,gtk,pango,subprocess class GreeterApp: def __init__( self ): self.builder = gtk.Builder() #self.builder.add_from_file("ui.glade") self.builder.add_from_string(ui) self.window = self.builder.get_object ("window") self.pass_field = self.builder.get_object ("pass_field") self.passct = self.builder.get_object ("pass") self.contrl = self.builder.get_object ("control") self.pass_field.modify_font(pango.FontDescription('Sans Bold 36')) self.passwd = datetime.now().strftime("%m%d") self.rdp_server = open("/tmp/rdp_server").read().split(',')[0] self.rdp_user = open("/tmp/rdp_user").read() self.rdp_passwd = open("/tmp/rdp_passwd").read() self.process = None timeout_add(5000, self.timeout) if self.window: self.window.connect("destroy", gtk.main_quit) self.contrl.set_visible(False) self.window.set_size_request(gtk.gdk.screen_width(),gtk.gdk.screen_height()) self.builder.connect_signals(self) def hide(self, widget): self.contrl.set_visible(False) self.passct.set_visible(True) self.window.move(0,0) self.window.set_size_request(gtk.gdk.screen_width(),gtk.gdk.screen_height()) if self.process: self.process.terminate() self.process = None def timeout(self): if self.window: self.window.set_keep_above(True) self.window.set_modal(True) return True def check_pass(self, widget): if self.pass_field.get_text() == self.passwd: self.pass_field.set_text("") self.passct.set_visible(False) self.contrl.set_visible(True) self.window.set_size_request(50,50) self.window.move(0,gtk.gdk.screen_height()-50) #sys.exit() self.process = subprocess.Popen(["xfreerdp","/v:"+self.rdp_server,"/f","/cert-ignore","/u:"+self.rdp_user,"/p:"+self.rdp_passwd]) def clear_pass(self, widget): self.pass_field.set_text("") def num_press(self, widget): self.pass_field.set_text(self.pass_field.get_text()+widget.get_tooltip_text()) def on_destroy(self, widget): sys.exit() if __name__ == "__main__": settings = gtk.settings_get_default() #settings.props.gtk_button_images = True settings.props.gtk_enable_tooltips = False ui = """ <?xml version="1.0" encoding="UTF-8"?> <interface> <requires lib="gtk+" version="2.24"/> <object class="GtkWindow" id="window"> <property name="can_focus">False</property> <property name="type">popup</property> <property name="title" translatable="yes">MyGreeter</property> <property name="resizable">False</property> <signal name="destroy" handler="on_destroy" swapped="no"/> <child> <object class="GtkVBox" id="vbox1"> <property name="visible">True</property> <property name="can_focus">False</property> <child> <object class="GtkHBox" id="control"> <property name="visible">True</property> <property name="can_focus">False</property> <child> <object class="GtkButton" id="power1"> <property name="use_action_appearance">False</property> <property name="width_request">50</property> <property name="height_request">42</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <signal name="clicked" handler="hide" swapped="no"/> <child> <object class="GtkImage" id="image4"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="stock">gtk-no</property> </object> </child> </object> <packing> <property name="expand">False</property> <property name="fill">True</property> <property name="position">0</property> </packing> </child> <child> <placeholder/> </child> <child> <placeholder/> </child> </object> <packing> <property name="expand">False</property> <property name="fill">True</property> <property name="position">0</property> </packing> </child> <child> <object class="GtkHBox" id="hbox1"> <property name="visible">True</property> <property name="can_focus">False</property> <child> <object class="GtkTable" id="pass"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="n_rows">6</property> <property name="n_columns">3</property> <child> <object class="GtkEntry" id="pass_field"> <property name="width_request">240</property> <property name="height_request">60</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="visibility">False</property> <property name="invisible_char">●</property> <property name="xalign">1</property> <property name="invisible_char_set">True</property> <property name="primary_icon_activatable">False</property> <property name="secondary_icon_activatable">False</property> <property name="primary_icon_sensitive">True</property> <property name="secondary_icon_sensitive">True</property> </object> <packing> <property name="right_attach">3</property> <property name="bottom_attach">2</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_0"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">0</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_0"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">0</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="top_attach">5</property> <property name="bottom_attach">6</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_1"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">1</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_1"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">1</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="top_attach">4</property> <property name="bottom_attach">5</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_2"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">2</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_2"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">2</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">1</property> <property name="right_attach">2</property> <property name="top_attach">4</property> <property name="bottom_attach">5</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_3"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">3</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_3"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">3</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">2</property> <property name="right_attach">3</property> <property name="top_attach">4</property> <property name="bottom_attach">5</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_4"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">4</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_4"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">4</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="top_attach">3</property> <property name="bottom_attach">4</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_5"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">5</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_5"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">5</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">1</property> <property name="right_attach">2</property> <property name="top_attach">3</property> <property name="bottom_attach">4</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_6"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">6</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_6"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">6</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">2</property> <property name="right_attach">3</property> <property name="top_attach">3</property> <property name="bottom_attach">4</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_7"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">7</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_7"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">7</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="top_attach">2</property> <property name="bottom_attach">3</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_8"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">8</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_8"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">8</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">1</property> <property name="right_attach">2</property> <property name="top_attach">2</property> <property name="bottom_attach">3</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_9"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <property name="tooltip_text" translatable="yes">9</property> <signal name="clicked" handler="num_press" swapped="no"/> <child> <object class="GtkLabel" id="l_9"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="label" translatable="yes">9</property> <attributes> <attribute name="weight" value="bold"/> <attribute name="size" value="40000"/> </attributes> </object> </child> </object> <packing> <property name="left_attach">2</property> <property name="right_attach">3</property> <property name="top_attach">2</property> <property name="bottom_attach">3</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_ent"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <signal name="clicked" handler="check_pass" swapped="no"/> <child> <object class="GtkImage" id="image2"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="stock">gtk-yes</property> </object> </child> </object> <packing> <property name="left_attach">1</property> <property name="right_attach">2</property> <property name="top_attach">5</property> <property name="bottom_attach">6</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> <child> <object class="GtkButton" id="b_del"> <property name="use_action_appearance">False</property> <property name="width_request">80</property> <property name="height_request">80</property> <property name="visible">True</property> <property name="can_focus">True</property> <property name="receives_default">True</property> <signal name="clicked" handler="clear_pass" swapped="no"/> <child> <object class="GtkImage" id="image3"> <property name="visible">True</property> <property name="can_focus">False</property> <property name="stock">gtk-no</property> </object> </child> </object> <packing> <property name="left_attach">2</property> <property name="right_attach">3</property> <property name="top_attach">5</property> <property name="bottom_attach">6</property> <property name="x_options">GTK_SHRINK</property> <property name="y_options">GTK_SHRINK</property> </packing> </child> </object> <packing> <property name="expand">True</property> <property name="fill">False</property> <property name="position">0</property> </packing> </child> </object> <packing> <property name="expand">True</property> <property name="fill">False</property> <property name="position">1</property> </packing> </child> </object> </child> </object> </interface> """ app = GreeterApp() app.window.show() gtk.main() 


O código é fornecido como exemplo - você pode simplesmente digitar um nome de usuário e senha para uma conexão RDP, selecionar servidores, monitorar servidores e tudo o que sua imaginação é capaz - até mesmo impressões digitais.

Source: https://habr.com/ru/post/pt420099/


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